A new kinetic model for thermal poly(vinyl chloride) (PVC) dehydrochlorination on the basis of Lottka's scheme has been developed. Its use allows us to reveal three kinetic transmission regimes to a stationary state. The model is expanded to account for the influence of the hydrogen chloride diffusion on the PVC dehydrochlorination kinetics. A calculation method for a quantitative estimation of this influence when the PVC macromolecular defect concentration is changed with time has also been developed. The model is general enough to analyze the tremendous variety of experimental information about PVC dehydrochlorination kinetics and to regulate PVC aging and stabilization.
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Georgiev et al. (1990) studied this question.
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